Home / 85,682.40-118,081.44-61,768.32

Finding the Fourth Proportional to 85,682.40, 118,081.44 and 61,768.32

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Solution

The fourth proportional to 85,682.40, 118,081.44 and 61,768.32 is: 85,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682.40 : 118,081.44 = 61,768.32 : x
  2. Step 2: Convert to fraction form
    85,682.40/118,081.44 = 61,768.32/x
  3. Step 3: Cross multiply
    85,682.40x = 118,081.44 × 61,768.32
  4. Step 4: Simplify right side
    85,682.40x = 7,293,692,171.98
  5. Step 5: Solve for x
    x = 7,293,692,171.98/85,682.40
  6. Step 6: Final answer
    x = 85,124.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.